Daylight Saving Time: Why do we do it?

Dan LaMoore of Electric Time Company moves a clock face at their plant in Medfield, Mass., between a large tower clock, left, bound for King of Prussia, Pa., and a post clock headed to South Jordan, Utah, right, on Nov. 3, 2011. Daylight Savings Time begins at 2 a.m. Sunday, when clocks will be set forward one hour. (AP Photo/Elise Amendola)